To provide a compact two-step switch device capable of simplifying assembly, adjusting a stroke which becomes a target value and click feeling easily at a stage of design, and causing clear click feeling.

A key top 5 is integrally formed through a first deformation part 4 capable of elastically deforming stepwise in the vertical direction over a space surrounded by a rising peripheral wall part 3 and has a first switch part 6, a second switch part 7, and a second deformation part 11 capable of elastically deforming stepwise in the vertical direction. A movable contact 8 at a lower end of the first switch part is positioned at a lower position than a movable contact 9 at a lower end of the second switch part. The first deformation part is deformed by pressing load at a first step to the key top and displaces the key top downward up to a position where the movable contact of the first switch part is brought into contact with a first fixed contact 13. The second deformation part is deformed by pressing load at a second step, displaces the second switch part downward, and brings the movable contact 9 into contact with a second fixed contact 14. When load is released, both deformation parts are elastically restored to restore the key top to its original position.